Hydraulic lift for shellers



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United States Patent O HYDRAULIC LIFT FOR SHELLERS Einer A. Hansen, Rembrandt, Iowa Application August 24, 1953, Serial No. 376,154

2 Claims. (Cl. 193-17) My invention relates to a hydraulic lift for shellers.

An object of my invention is to provide a hydraulic arrangement which can be used cooperatively with the lifting or lowering arrangement of a sheller chute.

A further object of my invention is to provide a simplilied arrangement having the above characteristics, in a structure which is positive in operation, which maintains its alignment correctly at all times, and which can be adjusted.

With these and other objects in view, my invention consists in the construction, arrangement, and combination of the various parts of my device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which:

Figure 1 is a side elevation of my hydraulic arrangement showing it in combination with certain portions of the Sheller chute,

Figure 2 is a side view of the hydraulic unit as attached to certain levers of the lifting or lowering arrangement, and

Figure 3 is an end view of Figure 2.

My invention contemplates the provision of a simple hydraulic arrangement which will take the place of the usual mechanical arrangement used for raising and lowering sheller chutes of that type wherein the chute is raised olf` of the ground for traveling purposes and lowered to the ground when functioning.

I have used the character to designate the chute itself, and attached to the chute are the usual plates 11 which are pivotally attached at 12 to a pair of arms 13 which arms are rigidly attached at 14 to the channel members 15 which are attached to the framework 16 which framework `is a part of the sheller itself. I have further used the character 17 to indicate a pair of the usual bars which are commonly used on the mechanical type of lifting arrangement, and which are pivotally at- -tached at 18 to the bracket 19. l have further used the character 20 to designate a pair of further bars which are pivotally attached at 21 to the aforesaid bars 17. Attached at 22 to one of the bars 17 is a spring 23 which is attached at 24 to one of the bars 2li.

The bars 20 are pivotally attached at 25 in an offcenter manner with respect to the pivoting point 12 to the extending bracket 26 which is attached to the chute 1t).

Attached through the bars 17, I provide the rod 27 which rod is received within the curled portions 28 of the downwardly projecting rods 29, with the nut and washer assembly 34B retaining the members. The rods 29 include the threaded portions at 31 which are threadably engaged within the top portions 32 and the blocks 33 welded thereto of the carrier member which includes the further downwardly projecting portions 34 terminating in the base portions 35.

The character 36 indicates the base of an ordinary hydraulic jack of the type which is pumped by hand, and which need not be entered into `in detail herein, the character 37 indicating the pumping handle connected 2,784,825 Patented Mar. 12, 1.957

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42 which is secured to a pair of the members 34, the member 41 being secured by means of the nuts 43 to,

the strap 44 whichistrap 44 is also secured across the members 34. t Y

The strap 44 is attached by means of the cap screws 45. The piston 45a within the cylinderV 40` is attached to the 'push rod 46 which includes `the expanded portion at 47, and the portion 48 which is received within the cavity 49 of the transverse member 50, which member 50 includes the cylindrical pin extensions 51 which are received through suitable openings 52 in the arms 20.

The base of the jack is received Within the depressed receiving member 53 which member is attached at the bottom of the carrier.

The transverse straps 42 and 44 serve to rigidity the jack piston and rod so that it is maintained in constant alignment with the pivoting points on the arms 17 and 2i?.

It will now be noted that the members can be operated in the following manner. When it is desired to elevate the chute, or substantially in the position shown in Figure 1, the hydraulic jack handle 37 is pumped which correspondingly causes the piston 45a and rod 46 to rise, and since the rods 29 are stationary, this will cause the arms 17 and 20 to approach a position in alignment to each other, which correspondingly rocks the pivoting point 25 so that the chute swings upwardly in the direction of the arrow 54. The action is rapid and eliminates the necessity for the cumbersome other mechanical arrangements. To release the chute to its downward position, the small valve 55 in the hydraulic jack is released which causes the oil to ilow back and the piston to descend by the weight of the elements by which the arms 17 and 20 will approach a greater acute angle with respect to each other and the chute will drop in the reverse manner. The threaded end 31 of the rods 29 serves an important function in that this will permit adjustable attachment of the rods at any desired point to thereby tix the distance between the pivoting points on the respective arms, which will correspondingly raise or lower the original starting point of the chute according to the size and the requirements thereof.

The spring 23 serves to force the piston back to normal position by pulling on the point 22.

Some changes may be made in the construction and arrangement of the parts of my invention without departing from the real spirit and purpose of my invention, and it is my intention to cover by my claims any modified forms of structure or use of mechanical equivalents which may be reasonably included within their scope.

I claim as my invention:

l. In combination with a chute for shellers having pivoted arms for rocking said chute from ground engaging level, a hydraulic cylinder including a piston therein, a carrier for supporting said cylinder, vertical bars attached to said carrier and pivotally engaging certain of said arms, a piston in said hydraulic cylinder including a piston rod attached thereto in said cylinder pivotally engaging the other of said arms whereby forcing of said piston upwardly will cause said arms to be pivoted towards aligning position to rock said chute, said vertical bars including threaded lower extremities engaging said carrier for adjustably positioning said vertical bars, said carrier including a pair of spaced members to which said bars are attached, said bars terminating in upper curled portions, rods received through said curled portions for pivoting said arms, means for rigidly securing said cylinder to said carrier including a transverse strap attached across said' spacedmembers, a U-boltfor rigidly securing said cylinder to said strap. to provide cor-rect alignment between the pivoting points of said arms.

2. In combination with a chute for shellers having pivoted' arms for rocking saidl chute from groun'd engagcarrier including a pair of spaced members to which said bars are attached, said barsV terminating inupper curled portions, rods received through said curled portions for pivoting said arms, means for rigidly securing said cylinder to said carrier including a transverse strap attached across said spaced members, a U-bolt for rigidly securing said cylinder to said strap to provide correct alignment between the pivoting points of said arms, said cylinder including a pivoted pumping arm for hydraulically forcing said pistonlrodupwardlfy'.

References Cited in the tile of'this patent UNITED STATES" PATENTS 2,258,494 Hyland` et al. Oct. 7, 1941 

